Originally Posted by RCZ

If you drive it off boost it will be very similar in gas mileage to stock, but don't come in here and tell us you doubled the stock MPG rating by installing a TT kit. You might be running significantly leaner at low rpm while cruising and yeah, you might even be saving gas (very unlikely since you've plugged the exhaust path with a set of turbos).

You're essentially saying "get bigger injectors and your gas mileage will be higher". Thats bs.